ci: auto-merge Dependabot dev-deps minor/patch bumps#55
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PR #38 sat for 6 days before Dependabot itself rebased it as PR #54 (the noise that triggered this fix). Dev-only @types/node + typescript minor/patch bumps across 17 services don't need human review every week — they need to merge themselves when CI is green. Scope (deliberately narrow): - fires ONLY on PRs from dependabot[bot] (verified via two checks: github.actor + pull_request.user.login) - auto-merges ONLY when ALL of: (a) dependency-type = direct:development (dev-deps, not prod) (b) update-type ∈ {semver-minor, semver-patch} (NOT semver-major) (c) all status checks pass (gh pr merge --auto waits) - production deps, major bumps, or CI failures → human review still required Repo settings updated separately via API: - allow_auto_merge: true - delete_branch_on_merge: true Action pin (dependabot/fetch-metadata@d7267f6 = v2.3.0) per OpenSSF Scorecard best-practice: third-party actions pinned to full commit SHA. Refs: https://docs.github.com/en/code-security/dependabot/working-with-dependabot/automating-dependabot-with-github-actions
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Summary
PR #38 sat for 6 days before Dependabot itself rebased it as PR #54 — the
noise that prompted this fix. Dev-only
@types/node+typescriptminor/patch bumps across 17 MCP services shouldn't need a human merge
every week; they should auto-merge once CI is green.
Scope (deliberately narrow)
Workflow fires ONLY on PRs from
dependabot[bot]and auto-merges ONLY when all of:dependency-type == direct:development(dev-deps only; production still requires human review)update-type ∈ {semver-minor, semver-patch}(semver-major still requires human review)gh pr merge --autowaits for them)Anything outside that envelope (production deps, major version bump, CI failure) falls through to the existing manual-review flow.
Repo settings already enabled (via API)
allow_auto_merge: truedelete_branch_on_merge: trueSecurity posture
pull_request_targetis privileged; the workflow guards with TWO checks (github.actor == 'dependabot[bot]'ANDpull_request.user.login == 'dependabot[bot]') — both must hold, so a fork PR mis-labelled with Dependabot's username can't trick it.dependabot/fetch-metadataaction pinned to full commit SHAd7267f6(v2.3.0) per OpenSSF Scorecard best practice for third-party actions.contents: write+pull-requests: write(minimum forgh pr merge --auto).Test plan
Gregory Shevchenko <g@humanswith.ai>, no Claude co-author per public-repo disciplineallow_auto_merge,delete_branch_on_merge) confirmed enabled via APIFollow-up signal to watch
Next time Dependabot opens a dev-deps PR: it should auto-merge within ~5 minutes of CI green, no human action needed. If it sits open, the workflow's "Skip (not eligible)" log line in Actions will explain why (e.g. major-version bump). Production-deps Dependabot PRs continue to need manual review — that's intentional.
Refs